Fill in each numbered blank with one suitable word or phrase.

Children in (1) _____ Netherlands must be at least four years old to (2) _____ primary education. Almost all 4-year-olds (99. 3%) in the country indeed attend primary school, (3) _____ this is not compulsory until children reach the age (4) _____5 . Primary school is free of charge. In most schools, children are grouped by (5) _____ in mixed ability classes, with one teacher for all subjects. Primary school (6) _____ of 8 groups, thus schooling (7) _____ for 8 years. During the first two years, which (8) _____ kindergarten, children receive an average of 22 hours of (9) _____, during the last 6 years children receive an average of 25 hours per week. Schools are open 5 days a week, but children are free on Wednesday afternoon. At the end of primary school, or in group 8, schools advice on secondary school choice. Most schools use a national test to support this advice, for instance the 'Citotoets', a test (10) ____ by the Central Institute for Test development.